CN103897654A - Process for continuously producing ketone-oxime silicon sealant - Google Patents
Process for continuously producing ketone-oxime silicon sealant Download PDFInfo
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- CN103897654A CN103897654A CN201210582988.8A CN201210582988A CN103897654A CN 103897654 A CN103897654 A CN 103897654A CN 201210582988 A CN201210582988 A CN 201210582988A CN 103897654 A CN103897654 A CN 103897654A
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Abstract
The invention provides a process for continuously producing a ketone-oxime silicon sealant. The process comprises the following steps: 1, synthesizing methyl room-temperature vulcanized silicone rubber; 2, producing a base material; 3, preparing a sealant; and 4, subpackaging. According to the process, the existing intermittent production process flow is changed into four continuously performed steps, so that the steps in the production process can be controlled and regulated, and the controllability is strong; the dose and reacting condition of each raw material component is accurately controlled particularly, smooth performance of the production process is ensured, and the product quality is guaranteed; and the stability of the product appearance quality and the improvement of the storage performance can be strongly guaranteed, the production efficiency can be improved, the number of front-line workers can be reduced, and the production cost can be reduced.
Description
Technical field
The present invention relates to a kind of silicone sealant production technique, be specifically related to a kind of continuous production processes of ketoxime removing type silicone sealant.
Background technology
Along with the fast development of China's architectural decoration, door and window bonding, glass curtain wall, metal plate curtain wall, the decorations such as stone curtain wall are widely adopted, and silicone sealant is the crucial supplementary material of all kinds of curtain walls and decoration, and its Main Function is structural bonding, sealing.
The existing domestic enterprise mode of production is batch production, successively through producing several operations such as base-material, shredder grinding, glue planetary mixer stirring glue in RTV Methyl Silicone Rubber production process, kneader, finally, carry out the batch production method of packing.Between every procedure of this batch production method, be connected not tight, and, a collection of product of every production when glue (approximately 1 ton), bar and clear cylinder are once clearly; In addition the subject matter that, batch production exists is:
1. visual appearance is difficult to control;
2. production loss is large, and the waste of clear bar and clear cylinder is big for environment pollution;
3. the poor controllability of metering;
4. need direct labor many, labour intensity is large.
Summary of the invention
The deficiency existing for prior art, the technical issues that need to address of the present invention are, a kind of ketoxime removing type silicone sealant continuous production processes is provided, produce by the airtight serialization of whole process, the raising of the stable and storge quality of strong guarantee product appearance quality, enhance productivity, reduce shop floor worker, reduce production costs.
For solving the problems of the technologies described above, the technical solution used in the present invention is that a kind of ketoxime removing type silicone sealant continuous production processes, comprises the steps:
The first step, RTV Methyl Silicone Rubber synthetic:
By octamethylcyclotetrasiloxane or siloxanes mixture, add alkaline catalysts potassium hydroxide according to formula ratio, temperature of reaction is 90-105 ℃, and the reaction times is 1.8-2.2 hour; Starting time 1.8-2.2 hour; Add acid catalyst phosphoric acid, the reaction times is 1.5-1.8 hour again; Finally, be evacuated to-0.098MPa, continue with this understanding reaction, reaction times 4.5-5 hour, temperature of reaction is 180-190 ℃;
Above-mentioned formula according to quality proportioning is:
The ratio of octamethylcyclotetrasiloxane or siloxanes mixture and potassium hydroxide is 100000:0.3-0.5, and the ratio of octamethylcyclotetrasiloxane or siloxanes mixture and phosphoric acid is 100000:0.5-0.9;
Second step, base-material is produced:
The RTV Methyl Silicone Rubber that the first step is produced, adds 201 methyl-silicone oils, nm-class active calcium carbonate according to formula ratio, under temperature 115-135 ℃, the condition of vacuum-0.98MPa, by twin screw extruder blending dispersion;
Above-mentioned formula according to quality proportioning is:
201 methyl-silicone oil 5-8 parts, nm-class active calcium carbonate 30-42 part;
The 3rd step, join glue operation:
Add methyl tributanoximo silane according to formula ratio, vinyl tributyl ketoximyl silane, γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, dibutyl tin laurate; Joining gluing equipment by static mixing produces;
In reaction, the pressure of the total source of the gas of pressurized air is made as 0.6-0.85Mpa; Pigment pumping pressure is made as 3.5-5Mpa; Base-material pumping pressure is made as 13-16Mpa; Discharging accumulator without when material pressure be made as 0.5-0.7Mp; The pressure of pigment swager binder is made as 0.7-1Mpa; The pressure of base-material swager is made as 0.8-1.2Mpa; Catalyzer, tackifier charging pump pressure are made as 0.3-0.4MPa;
Above-mentioned formula according to quality proportioning is:
Methyl tributanoximo silane 3.5-9.5 part, vinyl tributyl ketoximyl silane 0.8-6 part, γ-aminopropyl triethoxysilane 1-3.5 part, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane 2-4.5 part, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane 0.5-1.5 part, dibutyl tin laurate 0.1-0.25 part;
The 4th step, packing:
The sizing material custody transfer of the ketoxime removing type silicone sealant that the 3rd step is produced, carries out accurate metering packing sealing according to packing specifications.
Above-mentioned a kind of ketoxime removing type silicone sealant continuous production processes, comprises the steps:
The first step, RTV Methyl Silicone Rubber synthetic:
By octamethylcyclotetrasiloxane or siloxanes mixture, add alkaline catalysts potassium hydroxide according to formula ratio, temperature of reaction is 95 ℃, and the reaction times is 2 hours; Starting time 2 hours; Add acid catalyst phosphoric acid, the reaction times is 1.6 hours again; Finally, be evacuated to-0.098MPa, continue with this understanding reaction, in 4.5 hours reaction times, temperature of reaction is 185 ℃;
Above-mentioned formula according to quality proportioning is:
The ratio of octamethylcyclotetrasiloxane or siloxanes mixture and potassium hydroxide is 100000:0.4, and the ratio of octamethylcyclotetrasiloxane or siloxanes mixture and phosphoric acid is 100000:0.7;
Second step, base-material is produced:
The RTV Methyl Silicone Rubber that the first step is produced, adds 201 methyl-silicone oils, nm-class active calcium carbonate according to formula ratio, under the condition of 125 ℃ of temperature, vacuum-0.98MPa, by twin screw extruder blending dispersion;
Above-mentioned formula according to quality proportioning is:
201 6 parts of methyl-silicone oils, 36 parts of nm-class active calcium carbonates;
The 3rd step, join glue operation:
Add methyl tributanoximo silane according to formula ratio, vinyl tributyl ketoximyl silane, γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, dibutyl tin laurate; Joining gluing equipment by static mixing produces;
In reaction, the pressure of the total source of the gas of pressurized air is made as 0.75Mpa; Pigment pumping pressure is made as 4Mpa; Base-material pumping pressure is made as 14.5Mpa; Discharging accumulator without when material pressure be made as 0.6Mp; The pressure of pigment swager binder is made as 0.85Mpa; The pressure of base-material swager is made as 1.0Mpa; Catalyzer, tackifier charging pump pressure are made as 0.35MPa;
Above-mentioned formula according to quality proportioning is:
6.5 parts of methyl tributanoximo silanes, 3.4 parts of vinyl tributyl ketoximyl silanes, 2 parts of γ-aminopropyl triethoxysilanes, γ-(2,3-epoxy, the third oxygen) 3.5 parts of propyl trimethoxy silicanes, 1.0 parts of N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilanes, 0.15 part of dibutyl tin laurate;
The 4th step, packing:
The sizing material custody transfer of the ketoxime removing type silicone sealant that the 3rd step is produced, carries out accurate metering packing sealing according to packing specifications.
Tool of the present invention has the following advantages and useful technique effect:
(1) the present invention is improved to original batch production technical process four steps of carrying out continuously, is convenient to the links in production process to control adjustment, and controllability is strong; Especially various feed composition consumptions and reaction conditions are accomplished to accurate control, guarantee that the smoothness of production technique is carried out, and then guarantee quality product;
(2) the present invention adjusts the formula of ketoxime removing type silicone sealant, adopt through the formula of screening and optimizing and produce to adapt to serialization by each step, the product performance of producing are more excellent, have good preservation stability and superior integrated performance index.
(3) the present invention, on catalyst system, is controlled temperature of reaction, realizes serialization and produces, and effectively avoid reacting the appearance of incomplete phenomenon, and the package stability of product is also improved significantly.
(4) because ketoxime removing type silicone sealant is for meeting wet-cured type tackiness agent, outward appearance and stability in storage be subject to starting material and airborne moisture effects larger, inevitable ingress of air when the shortcoming of batch production maximum is reinforced, the present invention joins being used in combination of gluing equipment by twin screw extruder and static mixing, realize and being produced to the total closed type serialization of finished product by starting material, effectively completely cut off air, made the outward appearance of ketoxime removing type glue and performance all obtain larger lifting;
(5) production technique of the present invention adopts total closed type serialization to produce the unpleasant odor that effectively reduces work area volatility of raw material generation, is conducive to protect the healthy of operator, improves production environment, energy-conserving and environment-protective.
Embodiment
embodiment 1
A kind of ketoxime removing type silicone sealant continuous production processes, comprises the steps:
The first step, RTV Methyl Silicone Rubber synthetic:
By octamethylcyclotetrasiloxane or siloxanes mixture, add alkaline catalysts potassium hydroxide according to formula ratio, temperature of reaction is 95 ℃, and the reaction times is 2 hours; Starting time 2 hours; Add acid catalyst phosphoric acid, the reaction times is 1.6 hours again; Finally, be evacuated to-0.098MPa, continue with this understanding reaction, in 4.5 hours reaction times, temperature of reaction is 185 ℃;
Above-mentioned formula according to quality proportioning is:
The ratio of octamethylcyclotetrasiloxane or siloxanes mixture and potassium hydroxide is 100000:0.4, and the ratio of octamethylcyclotetrasiloxane or siloxanes mixture and phosphoric acid is 100000:0.7;
Second step, base-material is produced:
The RTV Methyl Silicone Rubber that the first step is produced, adds 201 methyl-silicone oils, nm-class active calcium carbonate according to formula ratio, under the condition of 125 ℃ of temperature, vacuum-0.98MPa, by twin screw extruder blending dispersion;
Above-mentioned formula according to quality proportioning is:
201 6 parts of methyl-silicone oils, 36 parts of nm-class active calcium carbonates;
The 3rd step, join glue operation:
Add methyl tributanoximo silane according to formula ratio, vinyl tributyl ketoximyl silane, γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, dibutyl tin laurate; Joining gluing equipment by static mixing produces;
In reaction, the pressure of the total source of the gas of pressurized air is made as 0.75Mpa; Pigment pumping pressure is made as 4Mpa; Base-material pumping pressure is made as 14.5Mpa; Discharging accumulator without when material pressure be made as 0.6Mp; The pressure of pigment swager binder is made as 0.85Mpa; The pressure of base-material swager is made as 1.0Mpa; Catalyzer, tackifier charging pump pressure are made as 0.35MPa;
Above-mentioned formula according to quality proportioning is:
6.5 parts of methyl tributanoximo silanes, 3.4 parts of vinyl tributyl ketoximyl silanes, 2 parts of γ-aminopropyl triethoxysilanes, γ-(2,3-epoxy, the third oxygen) 3.5 parts of propyl trimethoxy silicanes, 1.0 parts of N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilanes, 0.15 part of dibutyl tin laurate;
The 4th step, packing:
The sizing material custody transfer of the ketoxime removing type silicone sealant that the 3rd step is produced, carries out accurate metering packing sealing according to packing specifications.
The ketoxime removing type silicone sealant continuous production processes of the present embodiment, productive capacity is as follows:
1, production efficiency, by 4 tons of original every 2000L kneader place wall scroll production line daily makinies, brings up to wall scroll production line daily making and reaches 24 tons, and the production efficiency of more original batch production technique improves 6 times.
2, material loss, because continuous automatic production process has adopted closed production, raw material drops into can farthest be converted into output, expect that from former finished product process Raw utilization ratio can reach 99%, the more original batch production technique of material loss reduces by 1.5%, calculate according to producing 30000 tons of products per year, can save more than 450 tons of starting material.
3, extra charge, is used continuous automatic production to reduce operator's quantity 50% compared with batch production, and electricity consumption of equipment reduces, and on average monthly saves current consumption 15%.
4, Measuring Precision, in the production process of the present embodiment, main raw material Measuring Precision is: 0.01, auxiliary agent Measuring Precision is: 0.001 figure place, and batch production Measuring Precision is only integer-bit, obviously improves than batch production Measuring Precision.
5, quality product, the product of production same recipe, adopts this technological operation than batch production technological operation, and product integrated performance index improves 20%, and product performance index sees the following form 1.
The contrast of table 1 product performance index
| ? | Tensile strength/MPa | Elongation/% |
| The product of batch production | 0.968 | 260.356 |
| The product that the present embodiment is produced | 1.1616 | 312.489 |
As can be seen from Table 1, the present embodiment is produced product tensile strength and extensibility significantly improve.
embodiment 2
A kind of ketoxime removing type silicone sealant continuous automatic production process, comprises the steps:
The first step, RTV Methyl Silicone Rubber synthetic:
By octamethylcyclotetrasiloxane or siloxanes mixture, add alkaline catalysts potassium hydroxide according to formula ratio, temperature of reaction is 90 ℃, and the reaction times is 2.2 hours; Starting time 1.8 hours; Add acid catalyst phosphoric acid, the reaction times is 1.5 hours again; Finally, be evacuated to-0.098MPa, continue with this understanding reaction, in 4.5 hours reaction times, temperature of reaction is 190 ℃;
Above-mentioned formula according to quality proportioning is:
The ratio of octamethylcyclotetrasiloxane or siloxanes mixture and potassium hydroxide is 100000:0.3, and the ratio of octamethylcyclotetrasiloxane or siloxanes mixture and phosphoric acid is 100000:0.5;
Second step, base-material is produced:
The RTV Methyl Silicone Rubber that the first step is produced, adds 201 methyl-silicone oils, nm-class active calcium carbonate according to formula ratio, under the condition of 115 ℃ of temperature, vacuum-0.98MPa, by twin screw extruder blending dispersion;
Above-mentioned formula according to quality proportioning is:
201 5 parts of methyl-silicone oils, 30 parts of nm-class active calcium carbonates;
The 3rd step, join glue operation:
Add methyl tributanoximo silane according to formula ratio, vinyl tributyl ketoximyl silane, γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, dibutyl tin laurate; Joining gluing equipment by static mixing produces;
In reaction, the pressure of the total source of the gas of pressurized air is made as 0.6Mpa; Pigment pumping pressure is made as 3.5Mpa; Base-material pumping pressure is made as 13Mpa; Discharging accumulator without when material pressure be made as 0.5Mp; The pressure of pigment swager binder is made as 1Mpa; The pressure of base-material swager is made as 1.2Mpa; Catalyzer, tackifier charging pump pressure are made as 0.3MPa;
Above-mentioned formula according to quality proportioning is:
3.5 parts of methyl tributanoximo silanes, 0.8 part of vinyl tributyl ketoximyl silane, 1 part of γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) 2 parts of propyl trimethoxy silicanes, 0.5 part of N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, 0.1 part of dibutyl tin laurate;
The 4th step, packing:
The sizing material custody transfer of the ketoxime removing type silicone sealant that the 3rd step is produced, carries out accurate metering packing sealing according to packing specifications.
The ketoxime removing type silicone sealant continuous production processes of the present embodiment, productive capacity is as follows:
1, production efficiency, by 4 tons of original every 2000L kneader place wall scroll production line daily makinies, brings up to wall scroll production line daily making and reaches 22 tons, and the production efficiency of more original batch production technique improves 6 times of left and right.
2, material loss, because continuous automatic production process has adopted closed production, raw material drops into can farthest be converted into output, expect that from former finished product process Raw utilization ratio can reach 99%, the more original batch production technique of material loss reduces by 1.5%, calculate according to producing 30000 tons of products per year, can save more than 450 tons of starting material.
3, extra charge, is used continuous automatic production to reduce operator's quantity 50% compared with batch production, and electricity consumption of equipment reduces, and on average monthly saves current consumption 15%.
4, Measuring Precision, in the production process of the present embodiment, main raw material Measuring Precision is: 0.01, auxiliary agent Measuring Precision is: 0.001 figure place, and batch production Measuring Precision is only integer-bit, obviously improves than batch production Measuring Precision.
5, quality product, the product of production same recipe, adopts this technological operation than batch production technological operation, and product integrated performance index improves 20%, and product integrated performance index sees the following form 2.
The contrast of table 2 product performance index
| ? | Tensile strength/MPa | Elongation/% |
| The product of batch production | 0.975 | 268.385 |
| The product that the present embodiment is produced | 1.172 | 315.489 |
As can be seen from Table 2, the present embodiment is produced product tensile strength and extensibility significantly improve.
embodiment 3
A kind of ketoxime removing type silicone sealant continuous automatic production process, comprises the steps:
The first step, RTV Methyl Silicone Rubber synthetic:
By octamethylcyclotetrasiloxane or siloxanes mixture, add alkaline catalysts potassium hydroxide according to formula ratio, temperature of reaction is 105 ℃, and the reaction times is 1.8 hours; Starting time 1.8 hours; Add acid catalyst phosphoric acid, the reaction times is 1.8 hours again; Finally, be evacuated to-0.098MPa, continue with this understanding reaction, in 5 hours reaction times, temperature of reaction is 180 ℃;
Above-mentioned formula according to quality proportioning is:
The ratio of octamethylcyclotetrasiloxane or siloxanes mixture and potassium hydroxide is 100000:0.5, and the ratio of octamethylcyclotetrasiloxane or siloxanes mixture and phosphoric acid is 100000:0.9;
Second step, base-material is produced:
The RTV Methyl Silicone Rubber that the first step is produced, adds 201 methyl-silicone oils, nm-class active calcium carbonate according to formula ratio, under the condition of 135 ℃ of temperature, vacuum-0.98MPa, by twin screw extruder blending dispersion;
Above-mentioned formula according to quality proportioning is:
201 8 parts of methyl-silicone oils, 42 parts of nm-class active calcium carbonates;
The 3rd step, join glue operation:
Add methyl tributanoximo silane according to formula ratio, vinyl tributyl ketoximyl silane, γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, dibutyl tin laurate; Joining gluing equipment by static mixing produces;
In reaction, the pressure of the total source of the gas of pressurized air is made as 0.85Mpa; Pigment pumping pressure is made as 5Mpa; Base-material pumping pressure is made as 16Mpa; Discharging accumulator without when material pressure be made as 0.7Mp; The pressure of pigment swager binder is made as 0.7Mpa; The pressure of base-material swager is made as 0.8Mpa; Catalyzer, tackifier charging pump pressure are made as 0.4MPa;
Above-mentioned formula according to quality proportioning is:
9.5 parts of methyl tributanoximo silanes, 6 parts of vinyl tributyl ketoximyl silanes, 3.5 parts of γ-aminopropyl triethoxysilanes, γ-(2,3-epoxy, the third oxygen) 4.5 parts of propyl trimethoxy silicanes, 1.5 parts of N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilanes, 0.25 part of dibutyl tin laurate;
The 4th step, packing:
The sizing material custody transfer of the ketoxime removing type silicone sealant that the 3rd step is produced, carries out accurate metering packing sealing according to packing specifications.
The ketoxime removing type silicone sealant continuous production processes of the present embodiment, productive capacity is as follows:
1, production efficiency, by 4 tons of original every 2000L kneader place wall scroll production line daily makinies, brings up to wall scroll production line daily making and reaches 20 tons, and the production efficiency of more original batch production technique improves 5 times.
2, material loss, because continuous automatic production process has adopted closed production, raw material drops into can farthest be converted into output, expect that from former finished product process Raw utilization ratio can reach 99%, the more original batch production technique of material loss reduces by 1.5%, calculate according to producing 30000 tons of products per year, can save more than 450 tons of starting material.
3, extra charge, is used continuous automatic production to reduce operator's quantity 50% compared with batch production, and electricity consumption of equipment reduces, and on average monthly saves current consumption 15%.
4, Measuring Precision, in the production process of the present embodiment, main raw material Measuring Precision is: 0.01, auxiliary agent Measuring Precision is: 0.001 figure place, and batch production Measuring Precision is only integer-bit, obviously improves than batch production Measuring Precision.
5, quality product, the product of production same recipe, adopts this technological operation than batch production technological operation, and product integrated performance index improves 20%, and product integrated performance index sees the following form 3.
The contrast of table 3 product performance index
| ? | Tensile strength/MPa | Elongation/% |
| The product of batch production | 0.960 | 269.385 |
| The product that the present embodiment is produced | 1.187 | 325.469 |
As can be seen from Table 3, the present embodiment is produced product tensile strength and extensibility significantly improve.
The above, be only to preferred embodiment of the present invention, is not that the present invention is done to other forms of restriction, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every the present invention program's content that do not depart from, to any simple modification made for any of the above embodiments, equivalent variations and remodeling, still belongs to protection scope of the present invention according to technical spirit of the present invention.
Claims (2)
1. a ketoxime removing type silicone sealant continuous production processes, is characterized in that, comprises the steps:
The first step, RTV Methyl Silicone Rubber synthetic:
By octamethylcyclotetrasiloxane or siloxanes mixture, add alkaline catalysts potassium hydroxide according to formula ratio, temperature of reaction is 90-105 ℃, and the reaction times is 1.8-2.2 hour; Starting time 1.8-2.2 hour; Add acid catalyst phosphoric acid, the reaction times is 1.5-1.8 hour again; Finally, be evacuated to-0.098MPa, continue with this understanding reaction, reaction times 4.5-5 hour, temperature of reaction is 180-190 ℃;
Above-mentioned formula according to quality proportioning is:
The ratio of octamethylcyclotetrasiloxane or siloxanes mixture and potassium hydroxide is 100000:0.3-0.5, and the ratio of octamethylcyclotetrasiloxane or siloxanes mixture and phosphoric acid is 100000:0.5-0.9;
Second step, base-material is produced:
The RTV Methyl Silicone Rubber that the first step is produced, adds 201 methyl-silicone oils, nm-class active calcium carbonate according to formula ratio, under temperature 115-135 ℃, the condition of vacuum-0.98MPa, by twin screw extruder blending dispersion;
Above-mentioned formula according to quality proportioning is:
201 methyl-silicone oil 5-8 parts, nm-class active calcium carbonate 30-42 part;
The 3rd step, join glue operation:
Add methyl tributanoximo silane according to formula ratio, vinyl tributyl ketoximyl silane, γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, dibutyl tin laurate; Joining gluing equipment by static mixing produces;
In reaction, the pressure of the total source of the gas of pressurized air is made as 0.6-0.85Mpa; Pigment pumping pressure is made as 3.5-5Mpa; Base-material pumping pressure is made as 13-16Mpa; Discharging accumulator without when material pressure be made as 0.5-0.7Mp; The pressure of pigment swager binder is made as 0.7-1Mpa; The pressure of base-material swager is made as 0.8-1.2Mpa; Catalyzer, tackifier charging pump pressure are made as 0.3-0.4MPa;
Above-mentioned formula according to quality proportioning is:
Methyl tributanoximo silane 3.5-9.5 part, vinyl tributyl ketoximyl silane 0.8-6 part, γ-aminopropyl triethoxysilane 1-3.5 part, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane 2-4.5 part, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane 0.5-1.5 part, dibutyl tin laurate 0.1-0.25 part;
The 4th step, packing:
The sizing material custody transfer of the ketoxime removing type silicone sealant that the 3rd step is produced, carries out accurate metering packing sealing according to packing specifications.
2. a kind of ketoxime removing type silicone sealant continuous production processes according to claim 1, is characterized in that, comprises the steps:
The first step, RTV Methyl Silicone Rubber synthetic:
By octamethylcyclotetrasiloxane or siloxanes mixture, add alkaline catalysts potassium hydroxide according to formula ratio, temperature of reaction is 95 ℃, and the reaction times is 2 hours; Starting time 2 hours; Add acid catalyst phosphoric acid, the reaction times is 1.6 hours again; Finally, be evacuated to-0.098MPa, continue with this understanding reaction, in 4.5 hours reaction times, temperature of reaction is 185 ℃;
Above-mentioned formula according to quality proportioning is:
The ratio of octamethylcyclotetrasiloxane or siloxanes mixture and potassium hydroxide is 100000:0.4, and the ratio of octamethylcyclotetrasiloxane or siloxanes mixture and phosphoric acid is 100000:0.7;
Second step, base-material is produced:
The RTV Methyl Silicone Rubber that the first step is produced, adds 201 methyl-silicone oils, nm-class active calcium carbonate according to formula ratio, under the condition of 125 ℃ of temperature, vacuum-0.98MPa, by twin screw extruder blending dispersion;
Above-mentioned formula according to quality proportioning is:
201 6 parts of methyl-silicone oils, 36 parts of nm-class active calcium carbonates;
The 3rd step, join glue operation:
Add methyl tributanoximo silane according to formula ratio, vinyl tributyl ketoximyl silane, γ-aminopropyl triethoxysilane, γ-(2,3-epoxy, the third oxygen) propyl trimethoxy silicane, N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilane, dibutyl tin laurate; Joining gluing equipment by static mixing produces;
In reaction, the pressure of the total source of the gas of pressurized air is made as 0.75Mpa; Pigment pumping pressure is made as 4Mpa; Base-material pumping pressure is made as 14.5Mpa; Discharging accumulator without when material pressure be made as 0.6Mp; The pressure of pigment swager binder is made as 0.85Mpa; The pressure of base-material swager is made as 1.0Mpa; Catalyzer, tackifier charging pump pressure are made as 0.35MPa;
Above-mentioned formula according to quality proportioning is:
6.5 parts of methyl tributanoximo silanes, 3.4 parts of vinyl tributyl ketoximyl silanes, 2 parts of γ-aminopropyl triethoxysilanes, γ-(2,3-epoxy, the third oxygen) 3.5 parts of propyl trimethoxy silicanes, 1.0 parts of N-(β mono-aminoethyl)-γ-aminopropyltrimethoxysilanes, 0.15 part of dibutyl tin laurate;
The 4th step, packing:
The sizing material custody transfer of the ketoxime removing type silicone sealant that the 3rd step is produced, carries out accurate metering packing sealing according to packing specifications.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440685A (en) * | 2015-11-29 | 2016-03-30 | 郑臣钏 | Automobile sealing strip production process |
| CN109401722A (en) * | 2018-10-29 | 2019-03-01 | 湖北君邦新材料科技有限公司 | A kind of production technology of organosilicon sealant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105440685A (en) * | 2015-11-29 | 2016-03-30 | 郑臣钏 | Automobile sealing strip production process |
| CN109401722A (en) * | 2018-10-29 | 2019-03-01 | 湖北君邦新材料科技有限公司 | A kind of production technology of organosilicon sealant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103897654B (en) | 2015-08-19 |
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